CN113526757B - Wastewater treatment device and method - Google Patents
Wastewater treatment device and method Download PDFInfo
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- CN113526757B CN113526757B CN202110996050.XA CN202110996050A CN113526757B CN 113526757 B CN113526757 B CN 113526757B CN 202110996050 A CN202110996050 A CN 202110996050A CN 113526757 B CN113526757 B CN 113526757B
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- C02F9/00—Multistage treatment of water, waste water or sewage
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Abstract
The invention discloses a wastewater treatment device and a wastewater treatment method, and belongs to the field of wastewater treatment. The device comprises a shell, wherein the upper side of the shell is provided with a water inlet, the lower side of the shell is provided with a water outlet, an illumination area is arranged in the shell and comprises at least one photodegradation unit and a light source for providing illumination for the photodegradation unit; the inlet of the photodegradation unit is connected with the water inlet, and the outlet of the photodegradation unit is connected with the water outlet; and a plurality of diaphragms are arranged in the photodegradation unit, divide the photodegradation unit into a plurality of sections and are used for recovering and treating the catalyst peeled off in the previous section of the photodegradation unit. The method adopts the device to treat the wastewater. The invention can efficiently treat the wastewater containing complex organic pollutants, and has better treatment effect.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a wastewater treatment device and a wastewater treatment method.
Background
The water environment pollution condition of China is serious, the ecological environment is seriously influenced, and the human health is harmed. How to treat waste water efficiently has become a problem facing the current society. Organic pollutants in the wastewater exist in the forms of benzene, naphthalene, anthracene, quinones and the like, and meanwhile heavy metal ions such as arsenic, chromium, cadmium, lead, mercury, vanadium and the like are mixed in the wastewater, so that the pollutants are complex in component and high in toxicity, and serious harm can be caused to human health and ecological environment due to improper treatment. Some photodegradation devices for treating organic wastewater exist in the market at present, but on the one hand, the existing devices generally have the problems of small contact area between a catalyst and wastewater and low illumination utilization rate, so that the catalytic degradation efficiency is low, and the wastewater treatment effect is poor. On the other hand, the organic pollutants in the wastewater need to be degraded by adopting a catalyst with corresponding photocatalytic activity, but in reality, the components of the organic pollutants in the wastewater are complex, a single catalyst cannot realize high-efficiency degradation of all the pollutants, and if a plurality of catalysts are added in a mixed manner, the catalysts affect each other, and the degradation effect on the organic pollutants is reduced. Therefore, some waste water is usually removed by a plurality of devices or is subjected to pollutant degradation after the catalyst in the devices is replaced, so that the treatment time and the use cost are greatly increased, and the waste water treatment efficiency is reduced.
The Chinese patent application numbers are: CN201110000895.5, published date is: patent literature of 2011, 6 and 29 discloses a photocatalytic degradation organic pollutant wastewater treatment device, which comprises a box body, wherein a plurality of baffling chambers which are relatively independent and sequentially connected end to end are arranged in the box body, a water inlet and a water outlet are respectively arranged at two ends of the baffling chamber, a plurality of three-dimensional reticular bodies which are solidified with catalysts are stacked in the baffling chambers at intervals, a through hole is formed in the middle of each three-dimensional reticular body, an ultraviolet light source is inserted into the through hole, and an aeration pipe is arranged at the bottom of each baffling chamber. The three-dimensional netted body is formed by overlapping a plurality of layers of netted carriers, the interval between the layers of netted carriers is 1-3 times of the width of a grid, the periphery of the netted carrier is relatively bent towards the bottom surface, and a T-shaped notch is cut in the middle and is turned over towards the bottom surface. The illumination device is inserted into the opening. The device can decompose organic matters in the wastewater to a great extent, but the device is not suitable for treating the wastewater containing complex pollutants, has poor treatment effect on the wastewater containing the complex organic pollutants, and reduces the sufficient absorption of the catalyst to light to a certain extent to influence the wastewater treatment efficiency.
The Chinese patent application numbers are: CN201720179681.1, published as: the patent document of 2017, 12 and 5 days discloses a device for treating wastewater by photocatalytic degradation of organic pollutants, which belongs to the field of wastewater treatment and comprises a cylindrical barrel, wherein a water inlet tangent to the inner circle of the cylinder is formed in the top end of the barrel, and a water outlet tangent to the inner circle of the cylinder is formed in the bottom end of the barrel; a plurality of photocatalytic plates are arranged in the cylinder, the upper surfaces of the photocatalytic plates are wavy surfaces, and the wavy surfaces are coated with first photocatalyst coatings; the photocatalytic plates are sequentially arranged from top to bottom, and the wavy surfaces of the photocatalytic plates are upward; a light reflecting plate is arranged above the photocatalytic plate, and a plurality of ultraviolet light sources are arranged between the photocatalytic plate and the light reflecting plate; and an ultrasonic transducer is arranged on the inner wall of the barrel and is connected with an ultrasonic generator arranged outside the barrel. On one hand, however, the utilization space of the photocatalytic panel is obviously insufficient, which is not beneficial to improving the photodegradation efficiency; on the other hand, the two photocatalyst coatings in the device are arranged in the same reactor, the second photocatalyst coating is limited by weak light, the catalytic performance is reduced, the degradation effect is influenced, and in actual work, the two photocatalyst coatings can be peeled off into waste water and contact with the other catalyst, so that the degradation effect of the other catalyst is reduced.
Disclosure of Invention
1. Problems to be solved
The invention provides a wastewater treatment device, which aims to solve the problem that the existing wastewater treatment device is not ideal in treatment effect and treatment efficiency on wastewater containing complex organic pollutants.
The invention also discloses a wastewater treatment method, and by adopting the wastewater treatment device, compared with the existing wastewater treatment process, the treatment efficiency and treatment effect of the wastewater containing complex organic pollutants are effectively improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A wastewater treatment device comprises a shell, wherein the upper side of the shell is provided with a water inlet, the lower side of the shell is provided with a water outlet, an illumination area is arranged in the shell, and the illumination area comprises at least one photodegradation unit and a light source for providing illumination for the photodegradation unit; the inlet of the photodegradation unit is connected with the water inlet, and the outlet of the photodegradation unit is connected with the water outlet; the light degradation unit is internally provided with a plurality of diaphragms which divide the light degradation unit into a plurality of sections and are used for recovering and treating the catalyst peeled off in the previous section of the light degradation unit.
As the further improvement of the technical scheme, the device also comprises an outer sleeve arranged in the illumination area, a plurality of photodegradation tubes are annularly arranged in the outer sleeve along the circumferential direction of the outer sleeve, each photodegradation unit comprises a plurality of mutually communicated photodegradation tubes, and the light source is arranged among the plurality of photodegradation tubes.
As a further improvement of the technical scheme, a cavity is arranged between the outer side wall and the inner side wall of the outer sleeve, an auxiliary agent adder is arranged on the outer sleeve, the outlet end of the auxiliary agent adder is communicated with the cavity of the outer sleeve, and the photodegradation tubes are respectively communicated with the cavity of the outer sleeve through pipelines.
As a further improvement of the technical scheme, a concentration detector is arranged at an inlet of the photodegradation unit, the light source is externally connected with a light source controller, and the concentration detector is electrically connected with the light source controller.
As a further improvement of the technical scheme, a reflective film is arranged on the inner side wall of the outer sleeve.
As a further improvement of the technical scheme, a plurality of bulges are arranged on the inner side wall of the photodegradation pipe, and the bulges are coated with the catalyst.
As a further improvement of the technical scheme, a plurality of small balls are arranged in the photodegradation pipe, the small balls are connected with the inner side wall of the photodegradation pipe through a rod, a wire or a rope, and the outer wall of each small ball is coated with a catalyst.
As a further improvement of the technical scheme, a filtering area is arranged at the inlet of the illumination area and/or the outlet of the illumination area, and a filtering membrane for adsorbing heavy metal ions is arranged in the filtering area.
As a further improvement of the technical scheme, an outlet of the photodegradation unit is connected with an inlet of an electromagnetic valve and is provided with a concentration detector, and the concentration detector is electrically connected with the electromagnetic valve; one outlet of the electromagnetic valve is connected with the inlet of the photodegradation unit through a circulating pipe, and the other outlet of the electromagnetic valve is connected with a water outlet.
A wastewater treatment method adopts the wastewater treatment device, and comprises the following steps:
1. according to the components of organic pollutants in the degraded wastewater, corresponding catalyst materials are coated on different sections of photodegradation units, and a filter membrane for filtering the catalyst peeled off from the previous section of photodegradation unit is arranged on the membrane;
2. starting the device, turning on the light source, guiding the wastewater into the wastewater treatment device from the water inlet, filtering the wastewater, and then enabling the wastewater to enter the photodegradation tube to degrade organic pollutants;
3. and carrying out standard detection on the concentration of the organic pollutants on the degraded wastewater, if the standard requirement is met, discharging the wastewater from a water outlet, and if the standard requirement is not met, leading the wastewater into the inlet of the photodegradation unit again.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention relates to a wastewater treatment device, which divides a photodegradation unit in an illumination area into a plurality of sections along the flow direction of wastewater, wherein each section of photodegradation unit is separated by a diaphragm, and different catalysts are coated in the photodegradation units of different sections, so that different organic pollutants in the wastewater can be degraded in a targeted manner, the treatment effect on the complex organic pollutants is effectively improved, particularly, the diaphragm is arranged between each section of photodegradation unit, so that catalyst fragments and solid impurities peeled off from the wastewater in the previous section of photodegradation unit can be filtered, the purposes of recovering the catalyst of the previous section of photodegradation unit and purifying the wastewater are achieved, and the adverse effect on the subsequent catalytic degradation reaction after different catalysts are mixed is avoided;
(2) According to the wastewater treatment device, the plurality of photodegradation tubes are annularly arranged in the outer sleeve, and one photodegradation sheet comprises the plurality of photodegradation tubes which are connected with each other, so that the flowing time of wastewater in the photodegradation cells is prolonged, and the degradation effect of organic pollutants is improved;
(3) According to the wastewater treatment device, the reflective film is arranged on the inner side wall of the outer sleeve, so that light rays irradiated by a light source can be reflected to the photodegradation tube again, the utilization rate of illumination is improved, and the degradation rate of organic pollutants is increased;
(4) According to the wastewater treatment device, the catalyst-coated bulges are arranged on the inner side wall of the photodegradation pipe, so that the catalytic reaction area between the wastewater and the photodegradation pipe is increased, and the degradation efficiency of organic pollutants is improved;
(5) According to the wastewater treatment device, the catalyst-coated small balls are arranged in the photodegradation tube and are connected with the inner side wall of the photodegradation tube through the rods, the lines or the ropes, so that when wastewater flows through the small balls, the contact area between pollutants and the catalyst is increased, particularly, the wastewater forms water flow disorder by virtue of the configuration layout of the small balls, the mixed contact degree of the catalyst and the pollutants in the wastewater is enhanced, the treatment effect on organic pollutants is effectively improved, and if the small balls are connected by adopting flexible rods, lines or ropes with proper strength and toughness, the small balls can irregularly move in the photodegradation tube, so that the degradation of the photocatalyst on the organic pollutants is enhanced, and the degradation efficiency on the organic pollutants is greatly improved;
(6) According to the wastewater treatment device, the outlet of the photodegradation unit is connected with the inlet of the electromagnetic valve and is provided with the concentration detector, when the concentration does not reach the standard, the electromagnetic valve can open the outlet connected with the circulating pipe, and the wastewater returns to the inlet of the photodegradation unit for photodegradation operation again, so that the treated wastewater can reach the discharge standard;
(7) Compared with the existing wastewater treatment process, the wastewater treatment method adopting the wastewater treatment device effectively improves the treatment effect on the wastewater containing complex organic pollutants.
Drawings
FIG. 1 is a schematic view of a wastewater treatment apparatus;
FIG. 2 is a schematic view showing the direction of wastewater flow in the illuminated area;
FIG. 3 is a schematic diagram showing the relative positions of the outer sleeve, the photodegradation tube and the light source;
FIG. 4 is a schematic diagram of the operation of the additive adder;
FIG. 5 is a cross-sectional view of a photodegradation tube;
FIG. 6 is a cross-sectional view of another photodegradation tube;
in the figure: 1. a housing; 2. a water inlet; 3. a water outlet; 4. a photodegradation tube; 5. a light source; 6. a diaphragm; 7. an outer sleeve; 8. an additive adder; 9. a protrusion; 10. a pellet; 11. a filtration membrane; 12. a concentration detector; 13. an electromagnetic valve; 14. a circulation pipe; 15. a fan; 16. a concentration detector; 17. and a light source controller.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying drawings.
Examples
A waste water treatment device mainly treats and purifies waste water containing organic pollutants and heavy metal ions, particularly waste water containing complex organic matters, and the waste water treatment effect of the device is obvious.
As shown in figure 1, the device is provided with a shell 1 with a box-shaped structure, the upper side of the shell 1 is provided with a water inlet 2, the water inlet is externally connected with a wastewater source through a water pipe, the lower side of the shell is provided with a water outlet 3, and the water outlet is connected with a drain pipe. A filtering area for roughly filtering wastewater and adsorbing heavy metal ions and an illumination area for degrading organic pollutants are arranged in the shell 1. Wherein, the position that is close to water inlet 2 in the casing 1 is equipped with the primary filter district that has the cavity, and the entry linkage water inlet 2 in the primary filter district, export then connect the import that is located the illumination district of primary filter district below. Be equipped with one deck filter screen and one deck filtration membrane 11 in the level filtering district, the filter screen is used for carrying out coarse filtration to waste water, and 11 surface coatings of filtration membrane have porous adsorption material, can adsorb the heavy metal ion in the waste water.
The illumination area comprises an outer sleeve 7 serving as an installation main body, at least one light degradation unit and a light source 5 used for providing illumination for the light degradation unit are arranged in the outer sleeve 7, the inlet of the light degradation unit is connected with the water inlet 2, and the outlet of the light degradation unit is connected with the water outlet 3. A plurality of diaphragms 6 are arranged in the photodegradation unit, the diaphragms 6 divide the photodegradation unit into a plurality of sections, and filter membranes for filtering the catalyst peeled off in the previous section of the photodegradation unit are arranged on the diaphragms 6 and used for recovering and treating the catalyst peeled off in the previous section of the photodegradation unit. By adopting the photodegradation unit with the structure, different catalysts are coated in the photodegradation units with different sections, so that different organic pollutants in the wastewater can be specifically degraded, and the treatment effect on the complex organic pollutants is effectively improved. Particularly, the diaphragm 6 is arranged between each section of photodegradation unit, so that catalyst fragments and solid impurities peeled off from the wastewater in the previous section of photodegradation unit can be filtered, the purposes of recovering the catalyst in the previous section of photodegradation unit and purifying the wastewater are achieved, and the catalyst in each section of photodegradation unit can be ensured to specifically degrade certain organic pollutants in the wastewater.
As shown in fig. 2 and 3, a plurality of photodegradation tubes 4 are annularly arranged in the outer sleeve 7 along the circumference thereof, the plurality of mutually communicated photodegradation tubes 4 constitute one photodegradation unit, and the light source is disposed between the plurality of photodegradation tubes 4. In this embodiment, the outer sleeve 7 is arranged horizontally, 8 photodegradation tubes 4 are horizontally arranged along the circumference of the outer sleeve 7 and are arranged in the outer sleeve 7 to form a ring structure, each 4 photodegradation tubes 4 which are communicated with each other form a photodegradation unit, and wastewater flow paths in the two photodegradation units are shown in fig. 2. Meanwhile, 8 photodegradation tubes 4 can also form one photodegradation unit or every 2 photodegradation tubes 4 can form one photodegradation unit. In this way, the flow path and the flow time of the wastewater in the photodegradation unit are increased, and the degradation effect on organic pollutants is improved. Particularly, the arrangement mode can reduce the installation space of an illumination area to the maximum extent on the basis of improving the degradation effect by only arranging the outer sleeve 7 in a single horizontal direction, reduces the volume of the device and the space required by installation, is more convenient to disassemble and assemble, and reduces the disassembling and assembling cost. Further, the light source can be arranged between the annular photodegradation tubes 4, the illumination area of each photodegradation tube 4 is ensured to the maximum extent without additional space installation, and the degradation effect is further improved.
In this embodiment, the light source 5 is a horizontally arranged lamp tube structure, and a transparent protective lampshade is arranged outside the lamp tube. Be equipped with the reflective membrane on the inside wall of outer tube 7, can reflect the light that light source 5 shines once more to photodegradation 4 pipes on, improve illumination effect for organic pollutant's degradation rate. However, adopt the illumination mode can give off the heat, long-time operation can make the inside temperature of device higher, consequently, this embodiment is equipped with air intake and air outlet respectively on casing 1, and air intake department is external to have fan 15 to can guarantee that the heat in the casing 1 cools off light source 5 along with air current circulation to the outside.
In addition, the illumination area can also adjust the illumination intensity of the light source 5 according to the concentration of organic pollutants contained in the wastewater, thereby saving energy. Specifically, a concentration detector 16 for detecting the concentration of the organic pollutants in the wastewater entering the illumination area is arranged at the inlet of the photodegradation unit, the light source 5 is externally connected with a light source controller 17, and the concentration detector 16 is electrically connected with the light source controller 17 and is used for grading the intensity of the light source 5. In this example, a level 1 intensity is initiated when the contaminant concentration exceeds the compliance concentration <5%, a level 2 intensity is initiated when the concentration is >5% and <20%, and a level three intensity is initiated when the concentration is > 20%. Simultaneously, this embodiment still is equipped with the flowmeter at the entry of photodegradation unit, can control the waste water flow who gets into the photodegradation unit, control when conveniently carrying out photodegradation to waste water.
It is worth mentioning that in order to increase the degradation rate of organic substances when degrading organic pollutants in wastewater, a photodegradation adjuvant is generally added to the wastewater. However, the photodegradation adjuvant, if added only at the inlet of the photodegradation unit, would make it less effective in the latter half of the photodegradation unit. Therefore, this embodiment provides unique process improvement to the photodegradation-assistant adding device according to the special arrangement structure of the photodegradation tube 4 of the device.
Specifically, as shown in fig. 4, a cavity is formed between the outer side wall and the inner side wall of the outer sleeve 7, an auxiliary agent adder 8 is mounted on the outer sleeve 7, an outlet end of the auxiliary agent adder 8 is communicated with the cavity of the outer sleeve 7, and the plurality of photodegradation tubes 4 are respectively communicated with the cavity of the outer sleeve 7 through separate pipelines. Through the arrangement, the additive adder 8 can make the light degradation additives uniformly flow to each light degradation pipe 4 along the pipeline of the cavity communicated with the light degradation pipes 4 only by adding the light degradation additives into the cavity of the outer sleeve 7, and the light degradation additive adding device combines the arrangement mode of the illumination area of the embodiment, is ingenious in arrangement, does not need to occupy too much installation space, and ensures the degradation capability of each section of the light degradation unit. In order to better control the addition amount and the addition flow rate of the photodegradation assistant, the outlet pipeline of the assistant adder 8 is further provided with an electromagnetic valve and a flow meter for controlling the addition of the assistant, so that the flow rate of the assistant at the outlet of the assistant adder 8 can be displayed and adjusted by the electromagnetic valve.
In order to further improve the degradation effect on organic pollutants, the device also adopts the following two structures. The first mode is as shown in fig. 4, a plurality of protrusions 9 are arranged on the inner side wall of the photodegradation tube 4, and a catalyst is coated on the protrusions 9, so that the catalytic reaction area between the wastewater and the photodegradation tube is increased, and the degradation efficiency of organic pollutants is improved. In a second mode, as shown in fig. 6, a plurality of beads 10 are disposed in the photodegradation tube 4, the beads 10 are connected to the inner side wall of the photodegradation tube 4 through a rod, a wire or a rope, when the wastewater flows through the beads 10, the contact area between the wastewater and the catalyst is increased, and particularly, the wastewater forms water flow disorder at the position of the beads 10, thereby increasing the mixing degree of the catalyst in the wastewater. If a flexible rod, a line or a rope with proper strength and toughness is adopted to connect the small ball 10, the small ball 10 can generate irregular movement along with water flow in the photodegradation tube 4, the contact between the catalyst and the wastewater is enhanced, the degradation effect on the organic pollutants is further improved, and the degradation efficiency on the organic pollutants is greatly improved. The present embodiment takes the second mode.
The exit in illumination district still is provided with the secondary filter district, is provided with filtration membrane 11 in the secondary filter district, the exit of the access connection photodegradation unit in secondary filter district, its exit linkage delivery port 3, after the degradation in illumination district, the organic pollutant concentration of waste water is up to standard, and waste water flows to in the secondary filter district and adsorbs the heavy metal ion in the waste water through multilayer filtration membrane 11, guarantees that final exhaust waste water satisfies the emission requirement. However, the concentration of organic pollutants after the degradation by illumination in the existing device is usually detected after the wastewater is discharged, and the wastewater treatment efficiency is greatly reduced because the concentration of the organic pollutants does not reach the standard and then is subjected to secondary photocatalytic degradation.
Therefore, the present embodiment takes the following measures. The outlet of the photodegradation unit is connected with the inlet of an electromagnetic valve 13 and is provided with a concentration detector 12, the concentration detector 12 is electrically connected with the electromagnetic valve 13, one outlet of the electromagnetic valve 13 is connected with the inlet of the photodegradation unit through a circulating pipe 14, and the other outlet is connected with the inlet of the secondary filtering area. When the concentration detector 12 detects that the concentration of the organic pollutants in the wastewater discharged by the photodegradation unit does not reach the standard, the electromagnetic valve 13 opens the outlet of the connecting circulating pipe 14, so that the wastewater returns to the illumination area to carry out the photodegradation reaction again until the concentration detector 12 detects that the concentration of the organic pollutants in the wastewater reaches the standard, the electromagnetic valve 13 opens the outlet of the connecting secondary filtering area, and the wastewater is discharged into the secondary filtering area to be filtered and discharged through the water outlet 3. It is worth mentioning that another illumination area can be arranged on one side of the original illumination area, the circulating pipe 14 is connected with the inlet of the photodegradation unit of the other illumination area, and the outlet of the photodegradation unit of the other illumination area is connected with the other inlet of the electromagnetic valve 13, so that the two illumination areas can work simultaneously, and the wastewater treatment efficiency is improved.
The following describes the specific operation of the apparatus of this embodiment in a complete and detailed manner:
1. according to the characteristics of the degraded wastewater, the bulges 9 or the small balls 10 are selected as catalyst carriers in different sections of photodegradation units, corresponding catalyst materials are coated on the catalyst carriers, and the membrane 6 is provided with a filter membrane for treating and recovering the catalyst peeled off from the previous section of photodegradation unit, so that different catalyst materials can be adopted in different sections of photodegradation units, and the different catalyst materials do not interfere with each other, and the degradation effect is ensured.
2. The device is activated, turning on the light source 5. And (3) leading the wastewater into a wastewater treatment device from the water inlet 2, filtering the wastewater, and then leading the wastewater into a photodegradation tube 4 to degrade organic pollutants. And (3) controllably injecting a photocatalytic auxiliary agent into the photodegradation tube by using an auxiliary agent adder 8 according to the reaction process so as to enhance the photocatalytic degradation effect.
For example, in one section of the photodegradation unit, an n-type semiconductor catalytic film of titanium dioxide, tin dioxide, tungsten oxide and the like is adopted, active species with strong oxidation capacity, such as hydroxyl free radicals, superoxide ion free radicals and the like, are generated through catalysis under illumination, dyes, polychlorinated phenol and the like in sewage are degraded, the degradation rate of the dyes, such as methylene blue, methyl orange and the like reaches more than 98%, and difficultly degraded polychlorinated phenol and a small amount of undegraded dyes enter the next section of the photodegradation unit. The next section of photodegradation unit adopts a non-metal doped nickel oxide/titanium dioxide composite catalytic film, so that the photocatalytic absorption wavelength is expanded, and the composite photocatalytic film has good photoresponse activity and chemical stability and can deeply degrade organic pollutants. Meanwhile, an auxiliary agent adder 8 is used for injecting an auxiliary catalyst into the photodegradation unit, so that toxic polychlorinated phenol is further completely degraded into carbon dioxide, water, chloride ions and the like.
3. And (3) carrying out concentration standard-reaching detection on the organic pollutants in the degraded wastewater, discharging the wastewater from the water outlet 3 if the concentration standard-reaching requirement is met, and introducing the wastewater from the inlet of the photodegradation unit again through the circulating pipe 14 if the concentration standard-reaching requirement is not met.
In conclusion, the wastewater treatment device of the embodiment adopts the serial photodegradation unit and sets the diaphragm therein, and simultaneously sets the bulges or the balls which are used for coating the catalytic material and increase the reaction area of the organic pollutants in the photodegradation unit, so that the wastewater treatment device can efficiently treat the wastewater containing the complex organic pollutants, and has better treatment effect.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a wastewater treatment device, includes casing (1), water inlet (2) have been seted up to casing (1) upside, and delivery port (3) have been seted up to the downside, be equipped with illumination zone, its characterized in that in casing (1): the illumination area comprises at least one light degradation unit and a light source (5) for providing illumination for the light degradation unit; the inlet of the photodegradation unit is connected with the water inlet (2), and the outlet of the photodegradation unit is connected with the water outlet (3); a plurality of diaphragms (6) are arranged in the photodegradation unit, and the diaphragms (6) divide the photodegradation unit into a plurality of sections and are used for recovering and treating the catalyst peeled off in the previous section of the photodegradation unit; different catalysts are coated in the photodegradation units at different sections;
the light source device also comprises an outer sleeve (7) arranged in the illumination area, a plurality of light degradation tubes (4) are annularly arranged in the outer sleeve (7) along the circumferential direction of the outer sleeve, the light degradation unit comprises a plurality of light degradation tubes (4) which are communicated with each other, and the light source (5) is arranged among the light degradation tubes (4);
the utility model discloses a light degradation pipe, including outer tube (7), auxiliary agent adder (8) are equipped with on outer tube (7), the exit end of auxiliary agent adder (8) communicates the cavity of outer tube (7), and is a plurality of light degradation pipe (4) are respectively through the cavity of pipeline intercommunication outer tube (7).
2. A wastewater treatment plant according to claim 1, characterized in that: concentration detector (16) are equipped with in the entry of photodegradation unit, light source (5) external light source controller (17) that has, concentration detector (16) electricity is connected light source controller (17).
3. A wastewater treatment plant according to claim 2, characterized in that: and a reflective film is arranged on the inner side wall of the outer sleeve (7).
4. A wastewater treatment plant according to any of claims 1-3, characterized in that: the inner side wall of the photodegradation pipe (4) is provided with a plurality of bulges (9), and the bulges (9) are coated with a catalyst.
5. A wastewater treatment plant according to any of claims 1-3, characterized in that: be equipped with a plurality of bobbles (10) in photodegradation pipe (4), inside wall through pole, line or rope connection photodegradation pipe (4) is passed through in bobble (10), bobble (10) outer wall coating has the catalyst.
6. A wastewater treatment plant according to any of claims 1-3, characterized in that: and a filtering area is arranged at the inlet of the illumination area and/or the outlet of the illumination area, and a filtering membrane (11) for adsorbing heavy metal ions is arranged in the filtering area.
7. A wastewater treatment plant according to any of claims 1-3, characterized in that: an outlet of the photodegradation unit is connected with an inlet of the electromagnetic valve (13) and is provided with a concentration detector (12), and the concentration detector (12) is electrically connected with the electromagnetic valve (13); one outlet of the electromagnetic valve (13) is connected with the inlet of the photodegradation unit through a circulating pipe (14), and the other outlet is connected with the water outlet (3).
8. A wastewater treatment method using the wastewater treatment apparatus according to any one of claims 1 to 7, comprising the steps of:
1. according to the components of organic pollutants in the degraded wastewater, corresponding catalyst materials are coated on different sections of photodegradation units, and a filter membrane for filtering the catalyst peeled off from the previous section of photodegradation unit is arranged on the diaphragm (6);
2. the device is started, the light source (5) is turned on, the wastewater is guided into the wastewater treatment device from the water inlet (2), and after the wastewater is filtered, the wastewater enters the photodegradation tube (4) to degrade organic pollutants;
3. and carrying out standard detection on the concentration of the organic pollutants on the degraded wastewater, if the standard requirement is met, discharging the wastewater from a water outlet (3), and if the standard requirement is not met, introducing the wastewater from the inlet of the photodegradation unit again.
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| CN102107927A (en) * | 2009-06-26 | 2011-06-29 | 任应刚 | Photocatalytic degradation treatment device of wastewater with organic pollutants |
| CN211813920U (en) * | 2020-03-04 | 2020-10-30 | 四川浩淼睿诚科技有限公司 | Waste water treatment device |
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| CN104370342A (en) * | 2014-11-19 | 2015-02-25 | 中国石油天然气股份有限公司 | Photocatalyst recovery device, organic waste water treatment method and organic waste water treatment device |
| CN205773504U (en) * | 2016-06-16 | 2016-12-07 | 江苏麦阁吸附剂有限公司 | A kind of semi continuous photocatalytic degradation reaction unit |
| CN206705734U (en) * | 2017-02-27 | 2017-12-05 | 榆林学院 | Photocatalysis degradation organic contaminant wastewater treatment equipment |
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| CN211813920U (en) * | 2020-03-04 | 2020-10-30 | 四川浩淼睿诚科技有限公司 | Waste water treatment device |
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